Die-press



I (No Model.)

G. E. MERRIMAN.

DIE PRESS. Y No'.128'2`'7,47. Patented Au'gf, 1883.

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` ATTORNEYS UNITED STATESv PATENT OEE/icm,

GEORGE E. MEEETMAN, oEfrEERYvinLE, CONNECTICUT.`

DIE-PRESS..

SPECIFICATION forming Vpart. of Letters Patent No. dated August '7,1883a v Application filed April 23, 1888. (No ImodeI.) i Y State ofConnecticut, have inventedcertain new and useful Improvements inPressesfor Metal-Working; and I dchereby declare that the following is a full,clear, and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, which form a part ofthis speciication, and in which- Figurel is a perspective view of aportion of a press used in the manufacture of sheetmetal ware -providedwith my improvement, and Fig. 2 is a longitudinal sectional view of theadjustable pitman.

Similar letters of reference indicate corresponding parts in both thefigures.

My invention has relationl to presses for m( nufacturing sheet-metalware, and it consists in the improved construction and combination ofparts of an adjustable plunger-operating pitman adapted to be used indrawingpresses, or cutting, punching, or shearing presses, or any otherpress in whichy adjustment of the plunger or platen is desired, ashereinafter more fully described and claimed.

Inthe accompanying drawings, the letter A indicates aportion of theframe-work of a press, forming bearings B at its upper end for thereception of a transverse crank-shaft, C, having iiy-wheel D, andforming vertical guides or ways E, in which the plunger F slides.

G is the adjustable pitman,- which is hinged by means of a cross-head,H, and cap I to the crank at its upper end, and at its lower end to theplunger by means of a bolt passing through perforated lugs or platesupon the upper side of the plunger and through a transverse bore, J, inthe end of the pitman.

The lower portion of the pitman consists of a female-threaded socket, K,in which turns the adjusting-screw L, which is held in place, whenadjusted, by means of a'locking-nut, M, turning upon the screw andbearing against the upper edge of the socket. This lockingnut isprovided in its outer rim with a series of holes, N, adapted to receivethe end of 'an iron bar, serving as handlewhen turning the nut, and theadjusting-screw has an annular head, O, above the screw-threadedportion,

which turns in the socket and' locking-nut, which head is provided witha similarseries of perforations, l?, in its face. Above the head O thescrew forms a conical portion, Q, which is continued by a cylindricalportion, R, above the same, which ends in ascrew-threaded portion, S,smaller in diameter than the cylindrical part, and having a transverseperforation, T.

A sleeve, U, having an annular flange, V, at its lower edge andscrew-threadedupon the outside, iits over the conical and cylindricalupper portions of screw L, and the outer rim of the flange Vis providedwith a series of sockets, W, similar to those in the locking-nut and inthe screw-head. A small nut, X, cylindrical upon its outside, is screwedupon the upper screw-threaded end, S, of screw L, rest-r ing with itslower edge upon theupper edge of sleeve U, and is held in placeby a pin,Y, passing through perforations Z in the nut, registering withperforation T in the screw. The upper end of the adjusting-screw, withsleeve U and nut X, is inserted into a socket, a, projecting from thecross-head H, and is screwthreaded at its outer portion, b, tting overthe threaded portion of sleeve U, while its inner portion forms a smoothcylindrical recess, C, in which nut X iits and turns. A short screw, d,smooth at its inner end, passes through the side of socket a, andprojects with its smooth end into a short transverse slot, e, in thescrew-threaded portion of sleeve U, preventing said sleeve from turningmore than a small fraction of a revolution.

It will now be seen that when it is desired to adjust the pitman thelocking-nut M is loosened and sleeve U unscrewed slightly, which willallow the nut X to turn in its recess, and the entire adjusting-screwwith it. When the latter has been adjusted, the locking-nut is screweddown tight against the upper edge of the lower socket, and sleeve U isscrewed up hard against nut X, which presses it and the end of theadjusting-screw up against the top of recess c, preventing it fromturning, and thus holding it in its adjusted position.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United Statesi l. The combination of theadjusting-screw L, having -lower screw-threaded portion and upper smoothportion, QR, and annular head or nut X at its upper end, socket K,socket a, female-sorew-threaded at its lower portion, b, and formingupper cylindrical recess, c, and locking-sleeve U, fitting upon theupper portion of the adjusting-screw, screw-threaded on the outside andturning in the screw-threaded part of socket a, and bearing with itsupper edge against nut or head X, as and for the purposeshown and setforth.

2. The combination of the lower screwthreaded socket K, adjusting-screwL, having head O, conical portion Q, cylindrical portion R, andscrew-threaded end S, having perfor-a tion T, cylindrical nut X, havingperforation GEORGE E. MERRIMAN.

Witnesses:

N. TAYLOR BALDWIN, GEORGE N. WATERBURY.

